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单选题
Examine the CREATE DISKGROUP command used to create a disk group:   SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY  DISK ’ORCL: FRA3’ NAME misc1, ’ORCL: FRA4’ NAME misc2;   In which situation would you use this method of disk group creation?()
A

 When two-way disk mirroring is required for the allocation units

B

 When three-way disk mirroring is required for the allocation units

C

 When using hardware mirroring or RAID

D

 When disk mirroring is required for the Automatic Storage Management (ASM) disks


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考题 单选题Examine the following command: ALTER DISKGROUP data MOUNT FORCE; In which scenario can you use the above command to mount the disk group? ()A when ASM disk goes offlineB when one or more ASM files are droppedC when some disks in a disk group are offlineD when some disks in a failure group for a disk group are rebalancing

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考题 单选题Examine the following ALTER command:   SQL ALTER DISKGROUP dgroup1 UNDROP DISKS;   What is the purpose of the command?()A  It cancels all pending disk drops within the disk group.B  It restores disks that are being dropped as the result of a DROP DISKGROUP operationC  It mounts disks in the disk group for which the drop-disk operation has already been co pletedD  It restores all the dropped disks in the disk group for which the drop-disk operation has already been completedE  It adds previously dropped disks back into the disk group